122553309 has 8 divisors (see below), whose sum is σ = 163455552. Its totient is φ = 81676640.

The previous prime is 122553307. The next prime is 122553329. The reversal of 122553309 is 903355221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122553309 - 2¹ = 122553307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122553307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15697 + ... + 22169.

It is an arithmetic number, because the mean of its divisors is an integer number (20431944).

Almost surely, 2^122553309 is an apocalyptic number.

It is an amenable number.

122553309 is a deficient number, since it is larger than the sum of its proper divisors (40902243).

122553309 is an equidigital number, since it uses as much as digits as its factorization.

122553309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12787.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 122553309 is about 11070.3798037827. The cubic root of 122553309 is about 496.7162262053.

The spelling of 122553309 in words is "one hundred twenty-two million, five hundred fifty-three thousand, three hundred nine".